Ticking sound from engine

[Panny2014]

My journey with my Porsche Panamera has been very expensive. I had timing chain done, and other work done from dealer and sound still there. $10000 in repairs and that irritating ticking sound still there. Dealer suggested that the tappets/lifters could be bad but that comes with a $6000 tag.
Any ideas of what could be the problem let me no. The sound seem like it coming from the driver side of engine valve cover.

[swisstoni]

A world away in terms of technology, but owners of rover V8s have heard a tappety ticking from that area and finally discovered it to be the exhaust manifold gasket leaking.

No idea if this is possible on the Porsche engine but it sprung to mind.

Edited by swisstoni on Sunday 18th October 21:42

[mrtwisty]

I have rarely seen a better demonstration of why one should always seek a differential diagnosis of a potentially expensive issue.

'Yeah mate, I know what the problem is - 10k please'

[anonymous-user]

The 4.8s are a bit ticky, Our cayenne has a slight ticking at idle. Was told it was injectors and perfectly normal. Same ticking noise as LPG injectors on our other vehicles.

[fatboy b]

Different engine, but my V8 Jag had a manufacturing defect with one tappet. It wasn’t hardened properly and wore unevenly. It then wore the valve guide unevenly resulting in it needing a new head. That was an £11k warranty job.

[A1VDY]

The ticking noise could be a sticky valve lifter.
Personally I would have changed the oil and filter and added some engine flush, ran it for 500 miles and drained/refilled.
Surprised your dealer changed the chains for a ticking noise.
These will rattle continuously if the chains and guides are worn and they've charged way over the odds to do this job anyway.

Edit- I re read your post and realised you also had other work done as well as the chains.

Edited by A1VDY on Sunday 18th October 21:38

[montyjohn]

I had an old Ford Mondeo, which in many ways is exactly like a Porsche.
I bought it right after It had the top end rebuilt after a cambelt failure (new valves etc) and ever since it always made a ticking sound.
I ran it like this for years with no issue.

No amount of oil changes / flushes stopped the ticking.
I always assumed it was a valve guide that was out of wack. maybe only some of the valves were changed and a slightly bent was was left in or a a lifter had died and wasn't replaced.

Only way to know for sure would be head(s) off, valves and lifters out, and inspect everything for trueness (is that a word) and defects. The MOndeo wasn't worth the hassle.

[HJG]

A common cause of a ticking noise (regardless of engine) is a loose exhaust manifold nut. Make sure all are tightened correctly.

[stevieturbo]

Panny2014 said:

My journey with my Porsche Panamera has been very expensive. I had timing chain done, and other work done from dealer and sound still there. $10000 in repairs and that irritating ticking sound still there. Dealer suggested that the tappets/lifters could be bad but that comes with a $6000 tag.
Any ideas of what could be the problem let me no. The sound seem like it coming from the driver side of engine valve cover.

And as with every such post...pretty much impossible to diagnose without some clue about what the noise is, or a sound/video clip.

A good experienced ear should be able to give some sort of direction.

Or if you can find a very very competent Picoscope user with the NVH kit, that might be able to help pinpoint further before spending thousands....but they're probably rarer than basic competent mechanics....which themselves are rare.